The P5+1 powers, all of which except Germany sit on the UN Security Council and have nuclear weapons themselves, want Iran to scale back its atomic program.

Tehran, which says its nuclear program is exclusively for electricity generation and medical uses, in return wants painful UN and Western sanctions lifted.

On 18th July, two days before a deadline to get a deal and after months of intense talks, negotiators from Iran and the six powers decided to give themselves until 24th November to nail down the accord.